AT518863B1 - Wind turbine - Google Patents

Wind turbine Download PDF

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Publication number
AT518863B1
AT518863B1 ATA50787/2016A AT507872016A AT518863B1 AT 518863 B1 AT518863 B1 AT 518863B1 AT 507872016 A AT507872016 A AT 507872016A AT 518863 B1 AT518863 B1 AT 518863B1
Authority
AT
Austria
Prior art keywords
rotor
wind turbine
generator
pitch
blades
Prior art date
Application number
ATA50787/2016A
Other languages
German (de)
Other versions
AT518863A4 (en
Inventor
Gregor Mallich Ing
Original Assignee
Gregor Mallich Ing
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gregor Mallich Ing filed Critical Gregor Mallich Ing
Priority to ATA50787/2016A priority Critical patent/AT518863B1/en
Application granted granted Critical
Publication of AT518863B1 publication Critical patent/AT518863B1/en
Publication of AT518863A4 publication Critical patent/AT518863A4/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D1/00Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/02Wind motors with rotation axis substantially parallel to the air flow entering the rotor  having a plurality of rotors
    • F03D1/025Wind motors with rotation axis substantially parallel to the air flow entering the rotor  having a plurality of rotors coaxially arranged
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D15/00Transmission of mechanical power
    • F03D15/20Gearless transmission, i.e. direct-drive
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K16/00Machines with more than one rotor or stator
    • H02K16/005Machines with only rotors, e.g. counter-rotating rotors
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K7/00Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/18Structural association of electric generators with mechanical driving motors, e.g. with turbines
    • H02K7/1807Rotary generators
    • H02K7/1823Rotary generators structurally associated with turbines or similar engines
    • H02K7/183Rotary generators structurally associated with turbines or similar engines wherein the turbine is a wind turbine
    • H02K7/1838Generators mounted in a nacelle or similar structure of a horizontal axis wind turbine
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2220/00Application
    • F05D2220/70Application in combination with
    • F05D2220/76Application in combination with an electrical generator
    • F05D2220/766Application in combination with an electrical generator via a direct connection, i.e. a gearless transmission
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction

Abstract

The invention relates to a wind turbine (1) having a first rotor (4) and a second rotor (5), wherein the second rotor (5) is rotatable in opposite directions to the first rotor (4), and the second rotor (5) to a stator (2a) of a generator (2) is arranged, and the first rotor (4) with the rotor (2b) of the generator (2) is connected, wherein the wind turbine (1) has a third rotor (6) with the rotor (2b) of the generator (2) is connected. The object of the invention is to provide a way to increase performance. This is inventively achieved in that third rotor blades (6b) of the third rotor (6) have a third pitch (γ) which is greater than a first pitch (α) of first rotor blades (4b) of the first rotor (4).

Description

Description The invention relates to a wind turbine with a first rotor and a second rotor, wherein the second rotor is rotatable in opposite directions to the first rotor and the second rotor is arranged on a stator of a generator and the first rotor is connected to the rotor of the generator. wherein the wind turbine has a third rotor connected to the rotor of the generator.
Due to the increase in renewable energy, there was also an increase in the construction of wind turbines. Due to the novelty of this technology, the potential of wind turbines is not yet exhausted.
Such wind turbines with three rotors, wherein a rotor is connected to the rotor of the generator and two rotors are connected to the stator of the generator are known for example from CN 203050995 U, UA 30272 A and CN 101225801 A. It is not known from these documents how the individual rotor blades are adjusted to each other.
From DE 10 2014 005 164 A1 a wind turbine with two counter-rotating rotors is known. One rotor is connected to the stator of the generator and the other rotor is connected to the rotor of the generator. As a result, the output power can be increased by the generator. The output power depends on the relative speed from the stator to the rotor. Since the mechanically induced maximum speed of the rotor is not achieved in this embodiment, the possible potential of the wind turbine for generating electrical power is not fully utilized by this design.
The object of the invention is to provide a wind turbine that eliminates this disadvantage and can deliver more power.
According to the invention, this object is achieved in that third rotor blades of the third rotor have a third pitch, which is greater than a first pitch of first rotor blades of the first rotor. This creates the advantage that the third rotor can pull the front rotor along.
In this case, a third hub of the third rotor is connected to the rotor of the generator. The third rotor and the first rotor are arranged on a common shaft.
By the third rotor, the output of the electric power is greater than in conventional wind turbines, since the relative speed of the rotor of the generator is increased to the stator of the generator.
It is advantageous if the first rotor, the second rotor and the third rotor each have rotor blades which are each connected to an actuator and when the rotor blades are adjusted by the actuator together and matched. As a result, the rotor blades can be individually or jointly adjusted in each case with an optimum pitch and also coordinated with each other.
Thus, the flow is optimal even when changing the wind direction, it is advantageous if the wind turbine has a mast with a turntable for Windrichtungsnachführung, wherein the first rotor, second rotor and third rotor are connected via a bridge to the mast. As a result, the wind turbine can always be adjusted to the wind direction.
It is favorable for the flow around, but also to avoid cavitation and to avoid stress when the bridge and the mast are aerodynamically shaped.
The same advantage arises when a first hub of the first rotor is aerodynamically shaped and when a third hub of the third rotor is aerodynamically shaped. In addition, the efficiency of the wind turbine can be increased in this way.
It is favorable if third rotor blades of the third rotor have a third pitch which is greater than a first pitch of first rotor blades of the first rotor. This creates the advantage that the third rotor can pull the front rotor along.
In order to achieve the opposite direction of rotation of the stator and rotor of the generator safely, it is advantageous if second rotor blades of the second rotor have a second pitch, which has a different orientation, or has a different sign than a first slope of the first Rotor blades of the first rotor. The slopes always refer to the acute angle to the horizontal plane.
In the following the invention will be described in more detail with reference to the non-limiting figures. In the drawings: Fig. 1 shows a wind turbine according to the invention in a first view; Fig. 2 shows the wind turbine in a detail view with outbreaks; FIG. 3 shows a second rotor of the wind power plant; FIG. FIG. 4 shows a first rotor of the wind power plant; FIG. and Fig. 5 shows a third rotor of the wind turbine.
A wind turbine 1, as shown in Fig. 1, has a generator 2 and a shaft 3. The shaft 3 has a first end 3a and a second end 3b. At the first end 3a, a first rotor 4 is arranged. In the region of the generator 2, a second rotor 5 is arranged and at the second end 3b of the shaft 3, a third rotor 6 is arranged.
The shaft 3 is freely rotatable in bearings. A first ball bearing 7 is mounted between the first rotor 4 and the generator 2. A second ball bearing 8 is provided between the generator 2 and the third rotor 6. The first ball bearing 7 and the second ball bearing 8 are arranged in columns 9 of a bridge 10, as shown in Fig. 2.
In order to put the wind turbine 1 in the wind and to be able to rotate with the wind direction, the two columns 9 of the bridge 10 are arranged on a turntable 11. It represents a wind direction tracking. This turntable 11 is capable of rotating the entire wind turbine 1 and is fixed on a mast 12.
At the first end 3a of the shaft 3, a first hub 4a of the first rotor 4 is fixed, are attached to the first rotor blades 4b. At the second end 3b of the shaft 3, a third hub 6a of the third rotor 6 is fixed, are attached to the third rotor blades 6b.
Second rotor blades 5 b are arranged on a stator 2 a of the generator 2. A rotor 2b of the generator 2 is fixedly connected to the shaft 3. The rotor 2b rotates together with the shaft 3 and the first rotor 4 and the third rotor 6 with. It does not matter how many rotor blades are provided.
The first rotor blades 4b have a first pitch α. The second rotor blades 5b have a second pitch β and the third rotor blades 6b have a third pitch γ. In the illustrated embodiment, first slope α and third slope γ are negative. The second slope ß is positive. Here, the acute angle between the horizontal plane and the rotor blade is considered. Each pitch α, ß, γ is variable by a collective pitch.
The first hub 4a and the third hub 6a, the mast 12 and the bridge 10 are aerodynamically shaped.
A positive brush contact 13 and a negative brush contact 14 of the generator 2 are mounted on a positive slip ring 15 and on a negative slip ring 16 with electrical insulation to the first end 3a and the second end 3b of the shaft 3.
At the two columns 9 are the positive power cable 13a and the negative power cable 14a. The power cables 13a and 14a are connected to the brush contacts 13 and 14. The brush contacts 13 and 14 grind on the slip rings 15 and 16. Two power contacts 17 of the generator 2 are electrically connected to the slip rings 15 and 16th
The function of the wind turbine 1 is as follows: The wind flows over all rotor blades 4b, 5b, 6b. The rotor blades 4b, 6b with a negative pitch α, γ rotate in one direction, the second rotor blades 5b with a positive pitch β rotate in a different direction. Thus, the first rotor 4 rotates in one direction, the second rotor 5 rotates in the other direction, and the third rotor 6 rotates in the same direction as the first rotor 4.
About the positive slip ring 15 and the negative slip ring 16, the current generated is derived. The arrangement of the positive and negative elements may be reversed in another embodiment.
The relative speed of the shaft 3 corresponds to twice the speed of a simple wind turbine and thus the wind turbine 1 also delivers twice the power to a rigidly mounted generator.
If a collective pitch adjustment is installed, draws the third rotor 6, when the third slope γ is made stronger as in the first rotor 4 - the first rotor 4 with. So the performance output is significantly increased.
Self-conducted tests have shown that this wind turbine 1 provides a double current output as a conventional wind turbine.
By a collective pitch of all three rotors 4, 5, 6 even more than twice the current output can be achieved.
This wind turbine 1 can be used in many conceivable sizes and fields of application: The wind turbine 1 can be used as a mobile power generator on campers, camping and yachts. It can also be installed on rooftops.
Embodiments are: An arrangement on a yacht for power generation in island operation with a rotor diameter up to 100 cm is possible.
Or it is intended for mounting on the roof of a caravan with a rotor diameter up to 200 cm.
The application to a single or multi-family house on the roof with a rotor diameter up to 200 cm is conceivable. In these embodiments, no mast 12 is provided. The turntable 11 is arranged directly on a solid surface.
On a separate mast 12, the wind turbine 1 on a plot with a rotor diameter of about 300 to 400 cm is conceivable.
Or the roof of a skyscraper is the establishment of several such wind turbines 1 with a rotor diameter of 500 cm possible, with or without mast 12th
Furthermore, it is possible to use such wind turbines in wind farms, in offshore facilities, when camping on its own stand (rotor diameter 100 cm).
The wind turbine 1 was tested on the basis of two prototypes: The prototype I has a rotor diameter of 25 cm.
The prototype II has a rotor diameter of 150 cm.
Both prototypes - although they are very simple - have produced more than twice as much electricity through their triple counter-rotating movement as compared to a conventional wind turbine.

Claims (8)

  1. claims
    Wind turbine (1) having a first rotor (4) and a second rotor (5) wherein the second rotor (5) is rotatable in opposite directions to the first rotor (4) and the second rotor (5) on a stator (2a) of Generator (2) is arranged and the first rotor (4) with the rotor (2b) of the generator (2) is connected, wherein the wind turbine (1) has a third rotor (6) with the rotor (2b) of the generator (2), characterized in that third rotor blades (6b) of the third rotor (6) have a third pitch (y) which is greater than a first pitch (a) of first rotor blades (4b) of the first rotor (4 ).
  2. 2. Wind power plant (1) according to claim 1, characterized in that the first rotor (4), the second rotor (5) and the third rotor (6) each have rotor blades (4b, 5b, 6b), each with an actuator are connected.
  3. 3. Wind turbine (1) according to claim 2, characterized in that the rotor blades (4b, 5b, 6b) are adjusted by the actuator together and matched to each other.
  4. 4. Wind power plant (1) according to one of claims 1 to 3, characterized in that the wind power plant (1) has a mast (12) with a hub (11) for Windrichtungsnach-leadership, wherein the first rotor (4), second rotor ( 5) and third rotor (6) via a bridge (10) to the mast (12) are connected.
  5. 5. Wind power plant (1) according to one of claims 1 to 4, characterized in that the bridge (10) and the mast (12) are aerodynamically shaped.
  6. 6. Wind power plant (1) according to one of claims 1 to 5, characterized in that a first hub (4a) of the first rotor (4) is aerodynamically shaped.
  7. 7. Wind turbine (1) according to one of claims 1 to 6, characterized in that a third hub (6a) of the third rotor (6) is aerodynamically shaped.
  8. 8. Wind turbine (1) according to one of claims 1 to 7, characterized in that second rotor blades (5b) of the second rotor (5) have a second pitch (ß), which has a different orientation, or has a different sign than a first pitch (a) of first rotor blades (4b) of the first rotor (4). 4 sheets of drawings
ATA50787/2016A 2016-09-06 2016-09-06 Wind turbine AT518863B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ATA50787/2016A AT518863B1 (en) 2016-09-06 2016-09-06 Wind turbine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ATA50787/2016A AT518863B1 (en) 2016-09-06 2016-09-06 Wind turbine

Publications (2)

Publication Number Publication Date
AT518863B1 true AT518863B1 (en) 2018-02-15
AT518863A4 AT518863A4 (en) 2018-02-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
ATA50787/2016A AT518863B1 (en) 2016-09-06 2016-09-06 Wind turbine

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB476716A (en) * 1937-02-04 1937-12-14 Rudolf Arnold Erren Improvements in and relating to electric generators
CH251987A (en) * 1945-03-15 1947-11-30 Besson Lionel Antoine Rotary hydraulic motor of axial type with propeller for high pressure and specific speed.
US4483658A (en) * 1979-12-11 1984-11-20 Levine Elliott M Rotational wake reaction steps for Foils
UA30272A (en) * 1998-11-04 2000-11-15
DE20306166U1 (en) * 2003-04-17 2003-07-10 Bauer Markus Wind power unit for electricity production has two oppositely running rotors driving separated generator parts
CN101149037A (en) * 2006-09-21 2008-03-26 席风春 Highly effective water wheel power generating method and bidirectional rotation two-way power generation hydraulic generator thereof
CN101225801A (en) * 2008-02-04 2008-07-23 乔飞阳 H sail-adding wing-shaped three-group windmill retrograde rotation power generation method and generating set
AT508880A1 (en) * 2009-02-24 2011-04-15 Peter Mag Podirsky Generator for generating electrical electricity by wind, water or drive
CN203050995U (en) * 2012-11-15 2013-07-10 程辉 High-efficiency stator and rotor planetary gear counter-rotating generator
DE102015102541A1 (en) * 2015-02-23 2016-08-25 Jugendforschungszentrum Schwarzwald-Schönbuch e. V. Wind turbine and method for its regulation

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB476716A (en) * 1937-02-04 1937-12-14 Rudolf Arnold Erren Improvements in and relating to electric generators
CH251987A (en) * 1945-03-15 1947-11-30 Besson Lionel Antoine Rotary hydraulic motor of axial type with propeller for high pressure and specific speed.
US4483658A (en) * 1979-12-11 1984-11-20 Levine Elliott M Rotational wake reaction steps for Foils
UA30272A (en) * 1998-11-04 2000-11-15
DE20306166U1 (en) * 2003-04-17 2003-07-10 Bauer Markus Wind power unit for electricity production has two oppositely running rotors driving separated generator parts
CN101149037A (en) * 2006-09-21 2008-03-26 席风春 Highly effective water wheel power generating method and bidirectional rotation two-way power generation hydraulic generator thereof
CN101225801A (en) * 2008-02-04 2008-07-23 乔飞阳 H sail-adding wing-shaped three-group windmill retrograde rotation power generation method and generating set
AT508880A1 (en) * 2009-02-24 2011-04-15 Peter Mag Podirsky Generator for generating electrical electricity by wind, water or drive
CN203050995U (en) * 2012-11-15 2013-07-10 程辉 High-efficiency stator and rotor planetary gear counter-rotating generator
DE102015102541A1 (en) * 2015-02-23 2016-08-25 Jugendforschungszentrum Schwarzwald-Schönbuch e. V. Wind turbine and method for its regulation

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Publication number Publication date
AT518863A4 (en) 2018-02-15

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